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Diffstat (limited to 'arch/arm/cpu/armv7')
-rw-r--r--arch/arm/cpu/armv7/exynos/lowlevel_init.c6
-rw-r--r--arch/arm/cpu/armv7/exynos/power.c6
2 files changed, 11 insertions, 1 deletions
diff --git a/arch/arm/cpu/armv7/exynos/lowlevel_init.c b/arch/arm/cpu/armv7/exynos/lowlevel_init.c
index 48b5511..dcc270f 100644
--- a/arch/arm/cpu/armv7/exynos/lowlevel_init.c
+++ b/arch/arm/cpu/armv7/exynos/lowlevel_init.c
@@ -39,6 +39,7 @@ enum {
DO_CLOCKS = 1 << 1,
DO_MEM_RESET = 1 << 2,
DO_UART = 1 << 3,
+ DO_POWER = 1 << 4,
};
int do_lowlevel_init(void)
@@ -62,9 +63,12 @@ int do_lowlevel_init(void)
break;
default:
/* This is a normal boot (not a wake from sleep) */
- actions = DO_CLOCKS | DO_MEM_RESET;
+ actions = DO_CLOCKS | DO_MEM_RESET | DO_POWER;
}
+ if (actions & DO_POWER)
+ set_ps_hold_ctrl();
+
if (actions & DO_CLOCKS) {
system_clock_init();
mem_ctrl_init(actions & DO_MEM_RESET);
diff --git a/arch/arm/cpu/armv7/exynos/power.c b/arch/arm/cpu/armv7/exynos/power.c
index 563abd7..638ee0b 100644
--- a/arch/arm/cpu/armv7/exynos/power.c
+++ b/arch/arm/cpu/armv7/exynos/power.c
@@ -112,6 +112,12 @@ static void exynos5_set_ps_hold_ctrl(void)
EXYNOS_PS_HOLD_CONTROL_DATA_HIGH);
}
+/*
+ * Set ps_hold data driving value high
+ * This enables the machine to stay powered on
+ * after the initial power-on condition goes away
+ * (e.g. power button).
+ */
void set_ps_hold_ctrl(void)
{
if (cpu_is_exynos5())